Two versions for holding dial indicators. They are made to hold 10mm x 4mm thick round rare earth magnets. The "covers" just press in once the magnets is installed. No need for glue. The small mount requires 2 x 2 magnets, whereas the larger one requires 3 x 2.

The hole for the mount can be drilled to your specific dial indicator once printed. The little hole can be tapped for M4 or M5 bolts.

Very useful for doing alignment to jointers, planers, table saws etc.